Change README.ubuntu.bash to executable.
Change README.ubuntu.bash to executable.

Chibin/gpdb,Chibin/gpdb,adam8157/gpdb,xinzweb/gpdb,Chibin/gpdb,Chibin/gpdb,50wu/gpdb,lisakowen/gpdb,yuanzhao/gpdb,50wu/gpdb,50wu/gpdb,yuanzhao/gpdb,lisakowen/gpdb,jmcatamney/gpdb,lisakowen/gpdb,xinzweb/gpdb,Chibin/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,xinzweb/gpdb,ashwinstar/gpdb,50wu/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,greenplum-db/gpdb,adam8157/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,edespino/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,edespino/gpdb,xinzweb/gpdb,ashwinstar/gpdb,greenplum-db/gpdb,Chibin/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,Chibin/gpdb,Chibin/gpdb,greenplum-db/gpdb,xinzweb/gpdb,edespino/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,lisakowen/gpdb,50wu/gpdb,adam8157/gpdb,50wu/gpdb,adam8157/gpdb,edespino/gpdb,Chibin/gpdb,lisakowen/gpdb,adam8157/gpdb,50wu/gpdb,Chibin/gpdb,adam8157/gpdb,edespino/gpdb,edespino/gpdb,yuanzhao/gpdb,edespino/gpdb,adam8157/gpdb,lisakowen/gpdb,edespino/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,jmcatamney/gpdb,edespino/gpdb,lisakowen/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,50wu/gpdb,greenplum-db/gpdb,xinzweb/gpdb,yuanzhao/gpdb,lisakowen/gpdb,adam8157/gpdb,ashwinstar/gpdb,edespino/gpdb,xinzweb/gpdb,jmcatamney/gpdb,xinzweb/gpdb